Hire the Best TCP/IP Specialists in Dhaka, BD

Awesome Job Success ~ Clients high recommendation ~ Completed over 50+ jobs ~Delivers On Time ~ Fast Communication ~ Accurate & Efficient ~ detail oriented & reliable. Hello, I am a full/part time passionate freelance worker. I am an IT Specialist with 8+ years of professional experience in system administration, networking, cybersecurity support, and IT infrastructure management. I have worked in TV broadcasting, corporate IT, and ISP environments, delivering reliable technical solutions and ongoing system maintenance for large organizations. ✔ My expertise includes Windows & Linux system administration,Artificial intelligence (AI), Active Directory, Office 365, virtualization (VMware, Hyper-V, Oracle VM), CCTV, server management, and enterprise-level network configuration. I have hands-on experience with Cisco, MikroTik, LAN/WAN, firewall configuration, optical fiber, and server monitoring tools. ✔ I provide end-to-end IT support, including hardware/software troubleshooting, malware analysis, backup strategies and IT security hardening. I also work with WordPress, SEO/SMM, Digital Marketing, n8n, Internet Research and digital administration support. I am dedicated, detail-oriented, and committed to delivering fast, secure, and reliable IT solutions for clients worldwide. I ensure timely communication, professional service, and long-term support for all projects.

Passionate about automation and control engineering, with a strong commitment to continuous learning and professional development. I view automation not merely as a profession, but as a field that genuinely inspires and motivates me. Highly self-motivated, goal-oriented, and dedicated to delivering quality results while consistently meeting project deadlines. Experience: 16 years Siemens Competency: * S5(Step-5), S5 to S7 Conversion * S7-200/ Smart (STEP 7 Micro/WIN SMART), * S7-300/ S7-400 (STEP 7 V5.x (SIMATIC Manager), S7-professional), * S7-1200/ 1200-G2/ 1500/ 1500T/ 1500F/ 1500R/H / ET-200SP CPU (TIA Portal v10.5/11/12/13/14/15/16/17/18/19/20/21, safety advance, Redundancy) * TD/ OP/ KTP/ TP/ MP/ BasicHMI/ ComfortHMI/ AdvancedHMI/Unified HMI (Protool, WinCC Flex 2008, Wincc V21/V20/V19/V18/ V17/ V14/V13/V12/V11, WinCC V7.x, WinCC V8.x) * DCS (PCS7 V7.x, PCS7 V8.x) * HMI Conversion * Sinumerik 840D sl, Simodrive 611A, Simoreg, Sinamics( G/ S/ V), Micromaster 440, MMC/OP/TCU, HHU, MCP * Motor: Servo/ Induction (synchronous/ asynchronous) * Starter, Start Drive, Drive Monitor, Diff 4.6, TOPO 4.6, SinuCom NC, HMI Analyzer, Sinutrain, Sizer, Siemens Stratup tool * LV/MV VFD, LV/MV Softstarter Rockwell Automation/ Allan Bradley Competency: * Micro820, Micro850, Micro870 (CCW) * CompactLogix 5370, 5380, and 5480 (Studio 5000), ControlLogix 5570 and 5580 (Studio 5000) * PanelView 5000, PanelView Plus 7, OptixPanel (FactoryTalk) (FactoryTalk Optix) * Scada: FactoryTalk View Machine Edition (ME), FactoryTalk View Site Edition (SE) * SLC 500 / PLC-5 Upgradation Automation Direct: *Do-more plc (Do-more Designer), C-more HMI(C-more Programming Software), Click PLC (CLICK Programming Software) Unitronics PLC: *Samba Series (VisiLogic Software): IFM/ Sick/ Cognex Camera Shape detection, Contour Detection, Pixel Count Wonderware Scada: * Indusoft WS, Intouch Scada Delta Competency: * DVP-ES(WPLSoft) * DVP-SE( ISPSoft) * HMI DOP series( DOP soft) * MH/ME/MS /C200/C2000/CH Other Competency: IEC 61131-3, C/C++, CODESYS, Visual Basic, Beijer HMI, LS KGLWin, Versa Pro, OMRON CX-One, Weintek easybuilder, Solar, Solar Inverter, On Grid Solar Inverter, Gefran Servo Motors, TRILOGI PLC Sequence Programming: Hydraulic Control, Pneumatic Control, Chilling unit control, Fuel Gas Compressor control, Assembling Unit control, Mechanical Gear Box, Coolant recirculation, Liquid Flow Control, Industrial Conveyor, Dust controller, CIP control, Temperature Control & monitoring, Celestar Autoclave Machine, Stenter Machine, Roll Grinding Sinumerik Control, Pharmaceutical machine, Beverage Filling unit, Textile Dying machinery, Cement Boll Mill, Redundant Control System using CPU417-4H, Boiler, Remote Monitoring Using (GPRS/VPN/Real IP), Data archiving, Axis positioning/ Motion control, Recipe, Chip Conveyor, Spindle/ Subspindle speed/ position control, Linear/Rotery Axis positioning/ Interpolation, Tool setter/ Workpiece setter (BLUM/ RENISHAW), Bar/Servo load, Automatic safety Door, Tailstock positioning, Programming M Codes, G code operation, NC cycle programming, S5 to S7 Conversion, S7-200 to S7-1200 conversion, OP to TP Conversion, WinCC v5.1 to WinCC V7.0 conversion, S7 to TIA Conversion, SIMOREG to SINAMICS conversion, Integration with ABB Robot with Siemens PLC, All types of sensor, actuator, Camera Integration System: Motor, Transducers (I2P, V2P), Load Cells, Digital Sensors, Analog Valves, Accumulator, Y-Delta Starter, Circuit Breakers, Overload relays, Heating units (Resistive, Inductive), Transmitters (Level, Pressure, Temperature, Flow, Weight, Speed, Cognex Vision Camera ), DC/AC Drives, Preventive & Breakdown Maintenance sequence, Profinet(GSD file)/Ethernet(SF block)/ RS232 based Keyence/ Cognex Barcode(2D) reader programming, GPRS/LTE module, Insys GSM modem integration, Integrating Siemens with Third-Party Control System Using MatrikonOPC server Protocol: Profibus, Profinet, MPI, PPI, MODBUS RS485/ TCP, TCP/IP, Networking (LAN/WAN), Industrial Ethernet, DriveCliq, ASi interface, Communication Processor, GPRS data communication, CANbus Electrical Drawing: EPLAN Electric P8(Major), EPLAN Pro panel, pcschamatic, Auto CAD Electrical(Minor) Pneumatic/ Hydraulic Drawing: Fluiddraw, FluidSim EU Electrical safety regulations for human being and electrical devices/property, Industrial standards

I build reliable IT environments that keep businesses running without disruption. Worked with over 150 clients worldwide and bringing over 10 years of hands-on experience in IT support and system administration, I specialize in diagnosing complex technical issues, optimizing workflows, and delivering practical solutions that improve day-to-day operations. My journey began with curiosity and has evolved into a profession focused on efficiency, automation, and user satisfaction. Committed to continuous learning and delivering high-quality technical solutions that align with business goals. 🔹 My Core Expertise ✅ IT Support & Help Desk Services • Remote Desktop Support • Technical Support (Level 1, 2 & 3) • Help Desk Support • Desktop & Laptop Troubleshooting • Hardware & Software Support • Troubleshooting hardware & software • MacOS Support • Printer & Peripheral Configuration • Mobile Device Support (Android & iPhone) ✅ System & Network Administration ✅ Microsoft 365 Administration • Microsoft 365 Setup & Management • Azure Active Directory (Azure AD) • Microsoft Intune Device Management • Exchange Online Administration • SharePoint Online • Microsoft Teams Administration • User Management & Security Policies • Email Migration & Troubleshooting • MS Power Automate ✅ Business Automation & Productivity • Power Automate, N8N, Workflow Automation • AI-Powered Business Solutions • Process Optimization, Email Automation • Business Automation Consulting • GoHighLevel Automation • Workflow Integration ✅ Virtual Assistant & Administrative Support • Administrative Tasks • Data Management • Client Support • Project Coordination • Slack & Monday Management 💡 Why Clients Choose Me ✔ Bachelor's Degree in Computer Science & Engineering (CSE) ✔ 10+ Years of Professional Experience ✔ Worked with 150+ International Clients ✔ Fast Response & Excellent Communication ✔ Quality Work with On-Time Delivery ✔ Focused on Long-Term Client Relationships ✔ 100% Commitment to Client Satisfaction My goal is simple: provide dependable IT support, optimize your systems, secure your infrastructure, and help your business operate more efficiently. Thank you for your valuable time and consideration. I look forward to helping you achieve your goals. Best Regards, Rimon Kumar Sarker

I have over 12+ Years of working experience in the Networking Field. I am an enthusiastic NETWORK ENGINEER with the necessary drive and determination needed to resolve complex networking issues. Possessing effective organizational skills and excellent working knowledge of networking technologies and having a commitment to keep up to date with the latest developments. I’m an adaptable and efficient team player with excellent communication skills at all levels. Experienced in providing motivation, guidance, and an up-to-date networking consultancy service to clients. Now looking for a new and challenging network engineering task that will make the best use of my existing skills and experience and also further my career as a freelancer. Technical Skill Set Summary:::::::: • Cisco routers / switches / WLC • Cisco ASA / FTD / ISE / FMC • Cisco NX-OS • Network Automation using Python3 • Checkpoint Firewall & Endpoint Security • Sophos XG Firewall & Intercept X with advance EDR • Gateway Redundancy Protocols: HSRP / VRRP / GLBP • Routing: RIPng / OSPF / EIGRP / BGP / PBR / PfR / VRF • VLANs / STP / RSTP / Ether channel (LAG) • VPNs – GRE / IPSec / DMVPN • LAN-WAN / NAT / ACL • IPv4 / IPv6 • F5 Load Balancer • SIEM-Splunk, Qradar, Wazhu, Suricata, Elastic • Juniper Junos • Palo Alto Next-Generation Firewall • Fortinet Solutions- FortiGate Firewall, FortiMail email gateway, and FortiAnalyzer. • Juniper firewalls SRX Series • TCP/IP, DNS, DHCP • Wireshark • MikroTik • Virtualization: VMware vSphere 6.x • Windows Server 2012 R2 Qualifications: • Cisco Certified Specialist - Security Core (CCNP SCOR-350-701) • Cisco Certified Network Associate (CCNA-R&S) • Palo Alto Networks Certified Network Security Engineer (PCNSE) • APPLICATION DELIVERY FUNDAMENTALS (F5-101) • Fortinet Network Security Expert (NSE 1, NSE 2, NSE 3 & NSE 4) • JNCIA-SEC (JNCIA-SEC) • Junos (JNCIA-Junos)

Hello! I’m Sorna Kundu, Manager of Network & Systems Engineering, with over 13+ years of professional experience in the Internet Service Provider (ISP) and Telecom sectors. I specialize in designing, implementing, and operating secure, scalable, and high-availability network and server infrastructures for enterprise and service-provider environments. My expertise covers: Network Infrastructure – Advanced routing & switching using Cisco, Juniper, MikroTik, F5, Firewalls, and Cisco APIC (ACI) in complex production networks. Core Networking Technologies – Deep hands-on experience with TCP/IP, OSPF, BGP, MPLS, Traffic Engineering, L2VPN, L3VPN, routing policies, and QoS. VPN & Secure Connectivity – Site-to-Site VPN, Remote Access VPN, IPsec, and GRE over IPsec for secure and reliable inter-site communication. Server & Systems Engineering – Linux system administration (Ubuntu, CentOS, Debian), server deployment, DNS, DHCP, Web, Mail, and Database services, virtualization (VMware, Proxmox), storage, monitoring, backup, and high-availability solutions. Operations & Troubleshooting – End-to-end network and server troubleshooting, performance optimization, migration, and 24/7 production support. I have also worked on top OTT platforms in Bangladesh, including Toffee, T Sports, and Binge, where I supported high-traffic, low-latency streaming infrastructures serving millions of users. My role focused on ensuring service availability, scalability, and performance during peak viewership. Why Work With Me: ✅ End-to-end expertise in both network and server infrastructure ✅ Hands-on experience supporting OTT platforms at a million-user scale ✅ Expert troubleshooting and root-cause analysis ✅ Production-ready designs, not lab-only solutions ✅ Clear communication and professional delivery

With over 20 years of experience under my girdle as an IT Administrator and network security engineer. I am a multi-certified and expert in IT Administration, Server & network security in Fortinet, Sophos, Cisco, Palo Alto, Wireless Network Implementation, Redhat Linux, Windows Server, VMware. I am the PERFECT contractor for your project. I look forward to working with you on your next IT & Networking project. All work is completed by ME, so you can rest assured knowing that your work will not be outsourced to someone else. Developing a good rapport, and regular communication is important to me. It ensures the project is completed to the specific guidelines required. I pride myself on providing the highest quality of work, and will never complete a project until the client is 100% satisfied. I have experience in server administration with Redhat Enterprise Linux Server, managing file systems, configuring encrypted partitions, iSCSI target, and iSCSI initiator, Logical Volume Management (LVM) and with their file systems, managing SELinux, Firewall Management (with iptables & firewall). I have expertise in Web (HTTP/HTTPS) Service with virtual hosts, CGI scripts, and user-based file/directory access controls, Apache and Tomcat. Managing and implementing services of Mail service (MTA, SMTP), CACHING-ONLY (DNS) SERVICE, DNS service, secure the File-Sharing with NFS service using NFSv3 and NFSv4, CIFS shares and FTP drop-box upload service. I have depth knowledge and experience in ZIMBRA mail service with Anti-Spam, Anti-Virus, Anti-Phishing, Anti-Malware, and firewall protection. I have also depth knowledge and experience in Inbound/Outbound Mail Filtering and Data Leak Prevention with CISCO ESA (Email Security Appliance), SOPHOS ESA (Email Security Appliance), Barracuda Email Security Gateway, and open source Scrollout F1 Anti-Spam Email Gateway. I have versatile experience in setting up and managing windows servers, and Active Directory servers, optimizing them for the best usage and fine-tuning the security aspects. I have expertise in VMware ESXI, VCenter appliance with the operations manager, vRialize log management, and vMware Horizon View (Virtual Desktop VDI), with the lowest possible downtime. Along with that I use shell scripting to automate day-to-day activities. I have setup and maintained clusters of DNS servers, web servers using Apache or Nginx controlled by a Load Balancer, DB servers using MySQL/MariaDB with Master-Slave replication. I have also experience in setting up NFS, iSCSI, FC, vmfs server for remote storage. I am always interested in new projects and look forward to discussing how we can work together. PROJECT HIGHLIGHTS- ** Mail Service with Zimbra Open Source Collaboration on RHEL 7. Presently maintaining 5 more projects with different corporate and government offices. ** Email Security Gateway solution, SMTP traffic with CISCO Email Security Virtual Appliance (IronPort). ** Email Security Gateway solution, SMTP traffic with SOPHOS Email Security Appliance **Virtualization with VMware ESXi, VCenter with Operations Manager, Server Cluster, HA, DRS, FT, and VRealize LogInsite. **Deployments of Virtual Desktop (VDI) with VMware Horizon view as floating desktop with linked clone and instant clone also implemented full clone with a persistent disk.